Traction wheel with movable blades



' Apr..3, 1923.

F. TRcHo-r TRACTION WHEEL WITH MOVABLE BLADES Filed Mar. 50, 1921 2sheets-sheet 1 Fig.1.

I 27 72 p 01. fe cld 6 {M 4 Apr. 3, 1923. 1,450,656

' F. TRcHoT TRACTION WHEEL WITH MOVABLE BLADES I 2 sheets-sheet 2 FiledMar, 50, 1921 zwgn 2 71m Fit 61 5 Lu, QM

drum (Z secured to tW'O blades mounted so as to be Patented Apr. 3,1923.

ICE.

FRANCOIS TRECI-IOT, 0F PARIS, FRANCE.

j TRACTION WHEEL WITH MOVABLE BLADES.

To all whom it may concern:

- .Be it known that I, F RANQOIS TRnoHor, a citizen of the FrenchRepublic, and a resident of 152, Avenue. Victor Hugo, Paris, France,have invented new and .useful Improvements in Traction Wheels withMovable Blades, of which the following is a specification.

The present invention relates to a wheel with movable blades fortractors, sleighs and generally all self propelled vehicles.

This wheel is, of the kind comprising a cylinder or drum revolvingaround an axis lyingtransversely of the direction ofmotion, the saiddrum being provided with slots: through which can pass paddles orrevoluble around an axis, which is eccentric in relation to that of thedrum, so that the blades, carried round by the rotation of the drum,project in turn through the slotsin the said drum and thus effect thepropulsion.

The main characteristic feature of the present invention consists inthat the drive of the movable blades is effected by the drum itself,which is rotated through chains, bevel gear, worm gear or in anysuitable manner, while the shaft, carrying the movable blades, remainsstationary.

This arrangement may also be used in combination with an arrangementwhich allows of varying the setting position of the crank shaft withrespect to the frameof the vehicle so as to be able to vary at will theportion of the cylinder or drum in which the movable blades project, asis already the case in wheels of the same kind.

The annexed drawings show by way of examples propeller wheels accordingto the present invention.

Fig. 1 is an elevation, partly in axial section, of a wheel for atractor.

Fig. 2 is a transverse section, taken on line 44 of Fig. 1.

Fig. 3 is a somewhat diagrammatic elevation of the tractor, equippedwith the wheel of Figs. 1 and 2.

Fig. 4 is a corresponding plan view thereof. 7

In the case of wheels designed for use on self-propelling road vehicles,tractors or the like, there may be adopted the form of constructionshown in Figs. 1, 2, 3 and 4.

The wheel comprises two symmetrically arranged parts, each comprising adriving lateral crowns 5,

Application filed March 30, 1921.

Serial No. 457,114.

which are journalled, through roller bearings c or the like, on websdofthe frame. Within those webs (Z is mounted the crankshaft cZ on thecrank pin of which are journalled collars or spiders 6, provided withforks f, in which are pivotally mounted the carriers 9 of blades 9,adapted to pass through slots 71. in the periphery of the drum 01.Members 7' are provided for guiding and cleaning the blades (Fig. 2).The blades, the working edges of which are of curvilinear shape, areinclined to the axis of rotation of the drum and are symmetricallylocated on both drums (see Fig. 4), so as to gradually enter within theground and to balance the lateral strains.

The wheel, formed by the two drums and cooperating blades and otherparts, is given its movement of rotationth'rough a central worm'gearin'gm m actuated by means of the shaft 472?, operated by the "engine (notshown), throughithe toothedx'vheels' m mi. 1 housing a, engaged intoslots n of the crowns b, protects the worm wheel m from the mud or dirt.

The setting position of the crank-shaft al in relation to the webs (1may be varied by means of a worm gearing l Z actuated through a rod andhand wheel Z this opera tion, by rotating the crank-shaft, allows. ofchanging the portion of the drum through which the blades project.

What I claim is:

1. A wheel with movable blades for tractors, sleighs and generallyself-propelled vehicles comprising a drum adapted to rotate around anaxis lying at right angles to the direction of motion of the vehicle,means for rotating said drum, slots provided in the periphery of saiddrum, a transverse normally stationary mounted on said crank shaft andindependent of the drum, blades pivotally connected to said collarwithin the drum and adapted to pass through the slots of the drum, saidblades being driven by the rotation of the drum.

2. A wheel with movable blades for tractors, sleighs and generallyself-propelled vehicles, comprising webs secured to the vehicle frame,adrum adapted to rotate around an axis lying at right angles to thedirection of motion of the vehicle, bearings be tween the said drum andthe webs, means for rotating said drum, slots provided in the peripheryof said drum, a transverse norcrank shaft, a collar loosely adapted torotate around mally stationary crank shaft, loosely carried by the Webs,a collar loosely mounted on said crank shaft and independent of thedrum, blades pivotally connected to said collar within the drum andadapted to pass through the slots of the drum, said blades being drivenby the rotation of the drum.

3. A wheel with movable blades comprising two symmetrically arrangeddrums, adapted to rotate around an axis lying at right angles to thedirection of travel of the vehicle, means for simultaneously rotatingboth drums, slots provided in the periphery of said drums, a transversestationary crank shaft, collars loosely mounted on saiderank shaft ineach drum and independent of the said drum, sets of blades pivotallyconnected to said collars within each of said drums and adapted to passthrough the peripheral slots thereof, said blades being driven by therotation of the drums.

4-. A wheel with movable blades comprising two symmetrically arrangeddrums, an axis lying at right angles to the direction of travel of thevehicle, means for simultaneously rotating both drums, slotssymmetrically inclined to the axis of rotation of the drums, provided inthe periphery of said drums, a transverse stationary crank shaft,collars loosely mounted on said crank shaft in each drum and independentof said drums, vsets of blades pivotally connected to said collarswithin each of said drums and adapted to pass through the peripheralslots thereof, said blades being driven by the rotation of the drums andbeing symmetrically inclined to the axis of rotation of the drums inboth drums.

5. In a wheel as claimed in claim 1, the provision of means for varyingat will the setting position of the crank shaft with relation to theaxis of rotation of the drum.

6. In a Wheel as claimed in claim 2, the provision of means for varyingat will the setting position of the crank shaft with relation to the ofrotation of the drum.

7. In a Wheel as claimed in claim 3, the provision of means for varyingatwill the setting position of the crank shaft with relation to the axisof rotation of the drum.

8. In a wheel as claimed in claim 4;, the provision of means for varyingat will the setting position of the crank shaft with relation to'theaxis of rotation of the drum.

In testimony whereof I have signed my name to this specification.

FRANQOIS TRECHOT.

lVitnesses c J. ARMENGAUD, JEUNE, M. DErnvRnMoN'r.

